Eaton Generator Owner's Manual

Also see for 10 kW Air-cooled: Owner's manual

185. Once the control board sees an RPM signal it will energize thefuel solenoid, drive the throttle open and continue the cranksequence.6. Starter motor will disengage when speed reaches starterdropout.7. If the generator does not reach 2200 RPM within 15 seconds,re-crank cycle will occur.8. If engine stops turning between starter dropout and 2200RPM, the board will go into a rest cycle for seven (7) secondsthen re-crank (if additional crank cycles exist).9. Once started, the generator will wait for a hold-off periodbefore starting to monitor oil pressure and oil temperature(refer to the Alarm Messages section for hold-off times).10. During Manual start cranking, if the Mode switch is movedfrom the Manual position, the cranking stops immediately.11. During Auto mode cranking, if the Utility returns, the crankingcycle does NOT abort but continues until complete. Once theengine starts, it will run for one (1) minute, then shut down.3.3.3 LOAD TRANSFERThe transfer of load when the generator is running is dependentupon the operating mode as follows:1. Manual• Will not transfer to generator if utility is present.• Will transfer to generator if utility fails (below 65% of nominalfor 10 consecutive seconds.• Will transfer back when utility returns for 15 consecutiveseconds. The engine will continue to run until removed fromthe Manual mode.2. Auto• Will start and run if Utility fails for 10 consecutive seconds.• Will start a five (5) second engine warm-up timer.• Will not transfer if utility subsequently returns.• Will transfer to generator if utility is still not present.• Will transfer back to utility once utility returns (above 75% ofnominal) for 15 seconds.• Will transfer back to utility if the generator is shut down forany reason (such as the switch is in the OFF position or ashutdown alarm.• After transfer, will shut down engine after one (1) minutecool-down time.3. Exercise• Will not exercise if generator is already running in either Autoor Manual mode.• During exercise, the controller will only transfer if utility failsduring exercise for 10 seconds, and will switch to Automode.3.3.4 UTILITY RESTOREDInitial Condition: Generator supplying power to customer load.When the utility returns (above 80% of nominal), a 15 secondreturn to utility timer will start. At the completion of this timer, ifthe utility supply is still present and acceptable, the control willtransfer the load back to the utility and run the engine through aone (1) minute cool down period and then shut down. If utility failsfor three (3) seconds during this cool down period, the controlwill transfer load back to the generator and continue to run whilemonitoring for utility to return.3.4 MANUAL TRANSFER OPERATION3.4.1 TRANSFER TO GENERATOR POWER SOURCETo start the generator and activate the transfer switch manually,proceed as follows:1. Set the generator’s AUTO/OFF/MANUAL switch to OFF.2. Set the generator’s main circuit breaker to its OFF (or OPEN)position.3. Turn OFF the utility power supply to the transfer switchusing the means provided (such as a utility main line circuitbreaker).DO NOT attempt to activate the transferswitch manually until all power voltage sup-plies to the switch have been positivelyturned off. Failure to turn off all power volt-age supplies may result in extremely hazard-ous and possibly fatal electrical shock.4. Use the manual transfer handle inside the transfer switch tomove the main contacts to their STANDBY position, i.e., loadsconnected to the standby power source (Figure 3.2).Figure 3.2 – Manual Transfer Switch OperationOperation